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ATOM-PROBE TOMOGRAPHY AND NANOSCIENCES

Abstract number: 4542

Session Code: IM03-OP080

DOI: 10.1002/9783527808465.EMC2016.4542

Meeting: The 16th European Microscopy Congress 2016

Session: Instrumentation and Methods

Topic: New Instrumentation

Presentation Form: Oral Presentation

Corresponding Email: didier.blavette@univ-rouen.fr

Didier Blavette (1), Isabelle Mouton (2), Sébastien Duguay (1)

1. GPM, Normandie Université, Rouen, France 2. LETI, CEA, Grenoble, France

Keywords: Atom probe tomography, defects, metallurgy, microelectronics, nanosciences, precipitation

The design of Atom probe tomography (APT) at Oxford and Rouen universities 25 years ago has been an outstanding breakthrough in the microscopy world. APT is the only analytical microscope able to provide 3D images of a material at the atomic scale [1]. Because of its ultimate spatial resolution (0.1 nm in depth, a few tenths of a nm at the sample surface), combined with its quantitativity in composition measurements, APT has played a major role for the investigation of the segregation of impurities to crystal defects or of the early stages of phase separation in solids. APT was the first to show Cottrell atmospheres (tiny clouds of impurity atoms around dislocations in crystals) at the atomic-scale in the dimensions of space [2].

 

A new breakthrough has been achieved ten years ago with the implementation of ultrafast pulsed laser (duration < 1ps) to atom probe tomography [3]. This new generation of instrument, designed in our lab and abroad, has made it possible the analysis of semi-conductors (figure 1) and oxides that are key materials in micro-electronics and nanosciences [4]. This major innovation with the use of FIB ion milling (focused ion beam)  to prepare samples in the region of interest opened a new insight in many fields of nanoscience related to nano-wires [5], nanostructured magnetic thin films [6], heavily-doped ultra-shallow junctions in microelectronics [7]. One of the biggest challenge being the atomic-scale reconstruction of MOSFET transistors [8,9]. Unique capabilities of atom probe tomography in nanoscience and salient findings will be highlighted on the basis of some selected illustrations. 3D APT reconstructions related to phase separation in GeMn self-organised thin films (figure 2) will be confronted to atomistic Kinetic Monte Carlo simulations conducted on rigid lattice [6].

 

[1] D. Blavette, A. Bostel, J.M. Sarrau, B. Deconihout  and A. Menand, 1993, Nature 363, 432

[2] D. Blavette, E. Cadel, A. Fraczkiewicz, A. Menand, 1999, Science 17, 2317

[3] B. Gault, F. Vurpillot, A. Vella, M. Gilbert, A. Menand, D. Blavette, B., 2006, Rev. Sci. Instr. 77, 043705

[4] S. Duguay, T. Philippe, F. Cristiano, D. Blavette, Applied Physics Letter (2010) 97, 242104

[5]  W. Chen et al. JAP, 111, 094909-094916

[6] I. Mouton, R, Larde, E. Talbot, C. Pareige, D. Blavette, JAP 115, 053515  (2014)

[7] Yang Qiu, Fuccio Cristiano, Karim Huet, Fulvio Mazzamuto, Giuseppe Fisicaro, Antonino La Magna, Maurice Quillec, Nikolay Cherkashin, Huiyuan Wang, Sébastien Duguay, and Didier Blavette, Nanoletters (2014) DOI: 10.1021/nl4042438

[8] R Estivill, M Juhel, M Gregoire, A Grenier, V Delaye, D Blavette , Scripta Materialia  (2015)113, 231-235

[9] A. Grenier, R. Serra, G. Audoit, Jp Barnes, S. Duguay, D. Blavette, N. Rolland, F. Vurpillot, P. Morin, P. Gouraud, Applied Physics Letters 106, 213102 (2015); doi: 10.1063/1.4921352

Figures:

Figure 1. 3D image (top left) related to the analysis of heavily doped poly-silicon (gate of MOS-FET transistors) exhibiting the segregation of P to GBs.. The concentration profile related to a selected GB (black square) shows an enrichment of both P and As to this GB.

Figure 2. 3D reconstruction revealing the presence of self-organised Mn-enriched nanocolumns (30 at.%), 3 nm in diameter in GeMn thin films. Films containing 6at.% of Mn were deposited by MBE epitaxy on Ge abstract at 100°C (0,02 nm/s).

To cite this abstract:

Didier Blavette, Isabelle Mouton, Sébastien Duguay; ATOM-PROBE TOMOGRAPHY AND NANOSCIENCES. The 16th European Microscopy Congress, Lyon, France. https://emc-proceedings.com/abstract/atom-probe-tomography-and-nanosciences/. Accessed: January 26, 2021
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